.formContainer{
    position: fixed;
    background-color: rgba(0, 0, 0, 0.5);
    width: 500px;
    height: 300px;
    top:50%;
    left:50%;
    transform: translate(-50%,-50%);
    padding: 20px;
    z-index:100;
    background: linear-gradient(
                to right bottom,
                rgba(255,255,255,.7),
                rgba(255,255,255,.5),
                rgba(255,255,255,.4)
            );
            /* 使背景模糊化 */
            backdrop-filter: blur(10px);
            box-shadow:0 0 20px #a29bfe;
            border-radius: 15px;
}

.logintitle{
    text-align: center;
    height: 80px;
    line-height: 80px;
    font-size: 30px;
    color:rgb(0, 0, 0);
}